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Manley

Manley Severe Duty Series Gen II Custom Valves

Not Yet Reviewed

These Severe Duty Gen II custom valves with unmatched strength and superiority are the only valves of their kind. Exhaust material XH-428 and intake material NK-844 are paired together for ultimate dominance over all others. With four times the tensile strength of competitors' intake valves and supremely better fatigue life, Manley Severe Duty Gen II custom valves truly show their commitment to seeing that you're there at the finish. You decide the head diameter and seat and margin widths, as well as valve length, groove type, and location for the perfect custom setup!

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Results 1 - 19 of 19

Manley Severe Duty Series Gen II Custom Valves 11242-1

Manley Severe Duty Series Gen II Custom Valves 11242-1

Manley Severe Duty Series Gen II Custom Valves 11242-1

Valve, Intake, Stainless Steel, 2.150 in. Diameter, .342 in. Stem, 5.655 in. Length, Each

Part Number: MAN-11242-1

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11242-8

Manley Severe Duty Series Gen II Custom Valves 11242-8

Manley Severe Duty Series Gen II Custom Valves 11242-8

Valves, Intake, Stainless Steel, 2.150 in. Diameter, .342 in. Stem, 5.655 in. Length, Set of 8

Part Number: MAN-11242-8

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11219-8

Manley Severe Duty Series Gen II Custom Valves 11219-8

Manley Severe Duty Series Gen II Custom Valves 11219-8

Valves, Exhaust, Stainless Steel, 2.060 in. Diameter,.342 in. Stem, 6.700 in. Length, Universal, Set of 8

Part Number: MAN-11219-8

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11264-1

Manley Severe Duty Series Gen II Custom Valves 11264-1

Manley Severe Duty Series Gen II Custom Valves 11264-1

Valves, Intake, Stainless Steel, 2.400 in. Diameter, .311 in. Stem, 6.300 in. Length, Universal, Set of 8

Part Number: MAN-11264-1

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11264-8

Manley Severe Duty Series Gen II Custom Valves 11264-8

Manley Severe Duty Series Gen II Custom Valves 11264-8

Valves, Intake, Stainless Steel, 2.400 in. Diameter, .311 in. Stem, 6.300 in. Length, Universal, Set of 8

Part Number: MAN-11264-8

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11219-1

Manley Severe Duty Series Gen II Custom Valves 11219-1

Manley Severe Duty Series Gen II Custom Valves 11219-1

Valve, Exhaust, Stainless Steel, 2.060 in. Diameter,.342 in. Stem, 6.700 in. Length, Universal, Each

Part Number: MAN-11219-1

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11221-1

Manley Severe Duty Series Gen II Custom Valves 11221-1

Manley Severe Duty Series Gen II Custom Valves 11221-1

Valve, Exhaust, Stainless Steel, 2.000 in. Diameter, .342 in. Stem, 6.700 in. Length, Universal, Each

Part Number: MAN-11221-1

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11224-1

Manley Severe Duty Series Gen II Custom Valves 11224-1

Manley Severe Duty Series Gen II Custom Valves 11224-1

Valve, Intake, Stainless Steel, 2.200 in. Diameter, .311 in. Stem, 5.750 in. Length, Universal, Each

Part Number: MAN-11224-1

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11224-8

Manley Severe Duty Series Gen II Custom Valves 11224-8

Manley Severe Duty Series Gen II Custom Valves 11224-8

Valves, Intake, Stainless Steel, 2.200 in. Diameter, .311 in. Stem, 5.750 in. Length, Universal, Set of 8

Part Number: MAN-11224-8

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11225-1

Manley Severe Duty Series Gen II Custom Valves 11225-1

Manley Severe Duty Series Gen II Custom Valves 11225-1

Valve, Exhaust, Stainless Steel, 1.625 in. Diameter, .342 in. Stem, 5.600 in. Length, Universal, Each

Part Number: MAN-11225-1

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11226-1

Manley Severe Duty Series Gen II Custom Valves 11226-1

Manley Severe Duty Series Gen II Custom Valves 11226-1

Valve, Intake, Stainless Steel, 2.200 in. Diameter, .274 in. Stem, 5.600 in. Length, Universal, Each

Part Number: MAN-11226-1

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11226-8

Manley Severe Duty Series Gen II Custom Valves 11226-8

Manley Severe Duty Series Gen II Custom Valves 11226-8

Valves, Intake, Stainless Steel, 2.200 in. Diameter, .274 in. Stem, 5.600 in. Length, Universal, Set of 8

Part Number: MAN-11226-8

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11229-1

Manley Severe Duty Series Gen II Custom Valves 11229-1

Manley Severe Duty Series Gen II Custom Valves 11229-1

Valve, Exhaust, Stainless Steel, 1.625 in. Diameter, .274 in. Stem, 5.600 in. Length, Universal, Each

Part Number: MAN-11229-1

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11254H-1

Manley Severe Duty Series Gen II Custom Valves 11254H-1

Manley Severe Duty Series Gen II Custom Valves 11254H-1

Valves, Intake, Stainless Steel, 2.300 in. Diameter, .372 in. Stem, 5.600 in. Length, Universal, Set of 8

Part Number: MAN-11254H-1

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11254H-8

Manley Severe Duty Series Gen II Custom Valves 11254H-8

Manley Severe Duty Series Gen II Custom Valves 11254H-8

Valves, Intake, Stainless Steel, 2.300 in. Diameter, .372 in. Stem, 5.600 in. Length, Universal, Set of 8

Part Number: MAN-11254H-8

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11220-1

Manley Severe Duty Series Gen II Custom Valves 11220-1

Manley Severe Duty Series Gen II Custom Valves 11220-1

Valve, Intake, Stainless Steel, 2.425 in. Diameter, .342 in. Stem, 6.800 in. Length, Universal, Each

Part Number: MAN-11220-1

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11220-8

Manley Severe Duty Series Gen II Custom Valves 11220-8

Manley Severe Duty Series Gen II Custom Valves 11220-8

Valves, Intake, Stainless Steel, 2.425 in. Diameter, .342 in. Stem, 6.800 in. Length, Universal, Set of 8

Part Number: MAN-11220-8

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11221-8

Manley Severe Duty Series Gen II Custom Valves 11221-8

Manley Severe Duty Series Gen II Custom Valves 11221-8

Valves, Exhaust, Stainless Steel, 2.000 in. Diameter, .342 in. Stem, 6.700 in. Length, Universal, Set of 8

Part Number: MAN-11221-8

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

Manley Severe Duty Series Gen II Custom Valves 11225-8

Manley Severe Duty Series Gen II Custom Valves 11225-8

Manley Severe Duty Series Gen II Custom Valves 11225-8

Valves, Exhaust, Stainless Steel, 1.625 in. Diameter, .342 in. Stem, 5.600 in. Length, Universal, Set of 8

Part Number: MAN-11225-8

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

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